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H. MATTULLATH. AUTOMATIC DEVICE EOE OPERATING EATGE oovEEs EOE ELEVAToEs.

No. 592,933. Patented Nov. 2,1897.

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AUTOMATIC DEVICE ECE VOPERATING HATCH COVERS ECR ELEVATCES. No. 592,983. Patented Nov. 2, 1897.

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H. MATTULLATH. AUTOMATIC DEVICE TOR OTBRATINC HATCH COVERS TOR BLTVATORS.

N O. 592,933. Patented Nov. 2, 1897.

,NITED STATES ATENT Enron.

HUGO MATTULLATH, OF DETROIT, MICHIGAN, ASSIGNOR TO THE ANDERSON SAFETY ELEVATOR COMPANY, LIMITED, OF SAME PLACE.

AUTOMATIC DEVICE FOR OPERATING HATCH-COVERS FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 592,933, dated November 2, 1897. Application iiled .Tune 22, 1896. Renewed February 13, 1897. Serial No. 623,319. (No model.)

To all whom t may concern:

Be it known that I, HUGo MATTULLATH, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Automatic Devices for Operating Hatch-Covers for Elevators, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to elevator attachments in which a set of hatch-covers, one for each floor, is adapted to be carried by the ele-v vator-cab beneath its platform and another like set on top of it, all so arranged that when the cab ascends it deposits the covers of the lower set in the hatch-openings and carries those of the upper set with it, and vice versa in descending.

My improvement is primarily devised for operating the lower set of hatch-covers, and comprises two sets of supports for each hatchcover, one set for supporting it in the hatchopening and the other for supporting it beneath the cab, all so constructed and arranged as to cooperate with each other in the movement of the cab, as more fully hereinafter described, and shown in the accompanying drawings, in which- Figure 1 is a cross-section thro ugh a hatchopening and through the platform of the elevator-cab equipped with a hatch-cover and showing my improved supporting devices in vertical section and elevation. Fig. 2 is a plan of the hatch-opening and of the platform of the elevator-cab, the latter being partly broken away to show the hatch-cover underneath. Fig. 3 represents a part of Fig. I in a different position of the parts. Fig. 4 is an elevation of three ooversupporting devices on one of the corners of the platform of the cab. Fig. 5 is a detached elevation of one of the supports in the hatchway. Fig. 6 is a diagram illustrating the operation ofthe devices.

In the drawings, A represents aoor in a building; B, the hatch-opening therein through which the elevator-platform in its ascent and descent is to' pass; C, the traveling platform of the elevator; D, the vertical guide-posts, and E one of the guides of the platform, all constructed and arranged to operate in the usual manner.

F represents a hatch-cover for closing the hatch-opening, which may be of any known construction. A metallic screen of the dimensions of the platform, covered over with asbestos cloth or other iireproof fabric and strong enough to support a man, answers the purpose very well, and as many of the covers are provided as there are openings in the different iioors.

G are projections preferably formed of antifriction-rollers @,mounted between brackets b, secured to the frame-bars of lthe cover upon two opposite sides. I

H are pivoted hangers for supporting the cover from the traveling platform of the ele- -vator. Each hanger consists of a bar pivoted at its upper end within a housing I and formed at its lower end with a bevel c, outwardly inclined toward the top and terminating in a shoulder cl. The hanger is backed by a spring e, which pressesit outwardly and compels it to engage with the antifrictionrollers a of the cover in the position of the parts as shown in Fig. I.

J are supports for the cover, secured in the hatch-openings, each support comprising a casing f, a bolt h, slidable in the casing and provided with rack-teeth, a toothed segment vl, secured upon a shaft j, and a double cam k, secured upon the end of the shaft j at one side of the easing, all so arranged that vby turning the cam k from the position shown in full lines in Fig. 5 into the position shown in dotted lines the bolt is projected, while the reverse movement retracts it into the casing, which operation is produced automatically in the movement of a cab by means of a wiper K which, as shown, is secured to the side of e platform in the path of the cam.

To restrict `the movement of the cam Within tf ese limits, I apply suitable stops, such as the shoulders Z, formed on the hub of the cam, and a stop-pin m on the casing engaging therewith.

The parts being constructed and arranged as shown and described, they are intended to operate as follows:

Supposing in Fig. I the traveling platformv to be ascending and carrying a cover freely roo suspended below it on hangers H, (there being four, two on each side,) while in the opening of the floor there is correspondingly in vertical line with each hanger a support J, adapted to be actuated by a wiper secured in proper relation theret-o on the platform, it will be seen that on the passage of the platform through the opening the wipers will strike the cams in the posit-ion of the parts as shown in Fig. U. In the further upward movement of the platform the wipers will cause the cams to rotate in a manner to project the bolts and cause them to pass directly beneath the friction-rollers a of the covers and at the same time push the hangers out of engagement therewith and thereby release the cover and leave it supported upon the bolts.

The hangers after being pushed out of engagement with the rollers are withdrawn on the further upward movement of the platform with little friction and assume again their normal position.

Supposing the platform to be on its downward trip, as in Fig. 3, it will be seen that the hangers, owing to the bevel at their ends, are caused to reengage with the rollers and crowd the bolts back, while at the same time the wipers cause the cams to rotate in the reverse direction by striking now the lower arm of the cam and thus causing the bolts to withdraw completely and leave the cover in engagement with the hangers to be carried down with the platform.

My construction permits the use of as many covers as there are hatch-openin gs, the covers being compaetly supported one below the other by having the hangers stepped off in different vertical lines, as shown in Fig. 4, the supports in the hatch-openings being correspondingly placed in line, so that the covers will be successively deposited in their respective hatch-openings as the eab ascends and successively removed as the cab descends.

I make the two arms or faces 7a of the cams somewhat longer than required for operating the bolt for the purpose of safety, as it will be seen that even if a cam should be accidentally turned into a wrong position from that it should have the wiper will always restore it to its proper position.

As a furt-her matter of safety the front end of the bolts maybe forked, as bythe addition of the projecting wings n, so that the bolts in operation will embrace the hangers while pushing them out of engagement with the antifriction-rollers d and thus support the latter while yet engaged with the hanger. In connection therewith I construct the rollerct in several independent parts, so that the hanger and bolt Contact with different portions of the roller.

All projecting parts are suitably rounded oif where there is any liability of parts coming in contact, and it is desirable to employ rubber or other cushioning devices between contacting surfaces to avoid noise. There should be also suitable guides provided whereby the covers are held in their prescribed p0- sitions while being released from or taken up by the platform, so as to guard against their accidental displacement by the swaying of the cab. As such devices are well known and have been used heretofore, I omit further reference thereto.

The spirit of my invention includes any other means for operating the slidable bolts by the movement of the platform, nor is it necessary to use a double cam, (or equivalent means,) as a single cam operating to project the bolt in the ascending of the platform will be sufficient provided the spring operating the hanger is strong enough to push the bolt back when the hanger reengages with the hatch-cover.

lVhat I claim as my invention is- 1. The combination with the traveling platform of an elevator and a hatch-cover carried beneath the same, of two sets of movable supports for said cover, said two sets operating one upon the other in the movement of the platform to release the cover from one set while engaging with the other.

2. The combination with the traveling platform and a hatch-cover carried bythe same, of a set of movable supports for the cover carried by the platform and adapted to automatically engagewith and carry said cover with the platform and a set of movable supports in the hatchway actuated by the movement of the platform to engage with and support said cover in the hatchway, said second set actuating the first set to disen gage them from the cover.

3. The combination with the travelingplatfcrm and a hatch-cover carried beneath the same, of two sets of movable supports for said cover, one supporting it from the platform and composed of pivoted hangers and the other supporting it in a hatch-opening and composed of slidable bolts operated by the movement of the platform, said hangers and slidable bolts operating one upon the other in the movement of the platform, substantially as described.

4. The combination with the traveling platform of a hatch-cover carried beneath the same, pivoted hangers adapted to automatically engage with and carry said cover, slidable bolts in the hatch-opening to support the cover therein and adapted to disengage the hangers from the cover and devices operated by the movement of the platform to actuate the slidable bolts.

5. The combination with the traveling platform of a hatch-cover beneath said platform, pivoted hangers from said platform adapted to automatically engage with and carry said cover, slidable bolts in the hatch-opening adapted to support the cover therein and to disengage the hangers from the cover and devices to reciprocatingly operate the slidable bolts by the movement of the platform.

G. The combination with the traveling platform, of a hatch-cover beneath said platform,

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pivoted hangers therefrom adapted to automatically engage with and carry said cover, slidable bolts in the hatch-opening adapted to support the cover therein and to disengage the hangers from the cover and devices to operate the bolts composed of a shaft connected by 'gearing with the slidable bolts and carrying a double cam, and a wiper carried by the platform and adapted to reciprocatingly rotate the cam.

'7. The combination with the traveling platform and a hatch-cover carried beneath the same, of devices for supporting the same in the hatch-opening, each comprising a slidable bolt,a shaft geared therewith,a double cam on the shaft, and a wiper on the platform adapted to impart to the bolt a reciprocating rotary movement in the travel of the platform.

8. The combination with the traveling platform and a hatch-cover beneath the same, of pivoted hangers adapted to automatically engage therewith and carry the same under the platform and devices in the hatch-opening for automatically disengaging said hangers from the cover, each comprising a slidable bolt reciprocatingly operated by the movement of the platform, said slidable bolts constituting supports for the cover in the hatchopening.

9. The combination with the traveling platform and a hatch-cover beneath the same of pivoted hangers adapted to automatically engage therewith and carry the same under the platform, and slidable bolts in the hatchopening operated by the movement of the platform, said slidable bolts operating in the path of the hangers to disengage them from the cover and constituting supports for the same in the hatch-opening.

10. The combination with the traveling platform of an elevator, of pivoted hangers therefrom provided with outwardly-projecting shoulders and beveled lower ends,a hatchcover provided with suitable projections for supporting it upon the shoulders of the hangers and with which the hangers are adapted to automatically engage to carry the cover underneath the platform, and means for releasing the hangers from the cover in the hatch-opening and supporting it therein.

11. The combination with the traveling platform of an elevator, of pivoted hangers therefrom having outwardly-projecting shoulders and beveled lower ends, a hatch-cover provided with projections with which the hangers are adapted to automatically en gage, supporting devices for the cover in the hatchopening, each comprising a slidable bolt, a

shaft geared therewith and a double cam on the shaft, and Wipers on the platform for operating said supporting devices by the movement of the platform, and indirectly move the hangers on the platform to release them from the cover, substantially as described.l

In testimony whereof I affix my signature in presence of two witnesses.

HUGO MATTULLATH. Witnesses:

M. B. ODOGHERTY, OTTO F. BARTHEL. 

